Date-recording attachment for cameras.



C. C. FINN.

DATE RECORDING ATTACHMENT FOR CAMERAS.

APPLICATION FILED MAR. H, 1914.

1,146,755. I I Patented July 13, 1915.

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COLUMBIA PLANOORAPH CO.,WASHINGTDN. n. c.

CHARLES 0. runner SEATTLE, WASHINGTON.

DATE-RECORDING ATTACHMENT FOR CAMERAS Specification of Letters Patent.

Patented. July 13, 1915.

Application 11166. March 11, 1914. Serial No. 823,908.

To all whom it may concern Be it known that 1, CHARLES C. FINN, acitizen of the United States, residing at Seattle, in the county of Kingand State of Washington, have invented 'certain'new and usefulImprovements in Date-Recording Attachments for Cameras, of which the following is a specification.

This invention relates to photography; and its object is to providedevices within a camera which may be conveniently regu lated fromoutside the latter whereby numerals or other symbols may be indicated onthe negative films to denote the date when the same were exposed.

The invention consists in certain novel devices and combinationsthereof, whereln series of numerals or equivalentdenoting charactersdenoting the date when exposures were made, may be selectivelyinterposed between the camera lens and the sensltized 1 negative film soas to-ma-sk a portion of the film with respect to the light raystransmitted through the lens thereby causing the film to be affected insuch manner that representations of the numerals or other characterswillbe subsequently developed upon the negative and appear on allphotographic prints therefrom.

In the accompanying drawings, Figure 1 is a view partly in frontelevation and partly in transverse vertical section, of a camera withthe present invention applied thereto. Fig. 2 is a plan View with aportion of the camera case broken away. Fig. 3 is an exterior plan viewof a part of the camera. Figs. 4: and 5 are longitudinal verticalsections through H and 55 of Fig. 1. Fig. 6 is a perspective view of agroup of numeral plates and a rotary carrier therefor, one of the platesbeing shown detached. Fig. 7 is a fragmentary view of a negative withthe date-indicating characters thereon.

The reference numeral 10 designates the case of a camera having aremovable back 11. At a short distance from said back the case-walls areprovided with inwardly projecting ribs, such as 12, Figs. 4: and 5, towhich the rear end of the bellows member 13 is secured. Said bellowsmember is connected at its front end with the usual lenscarrying frame,which is not shown.

F represents the sensitized film which, as usual, is unwound from aspool at one side of the case and thence led across the rear of saidchamber to'be wound about a spool at the other side of the case.

14 represents the rotary element which engages the'last mentioned spoolfor turning'the same and is accordingly provided with a finger-engaginghandle 15.

Subjacent to the top wall 1.6 of the case are horizontal partitions 17and 18 which are spaced to afford a compartment 19 between said wall andthe upper partition and a second compartment 20 between the par titions.

Located in compartment 19 is horizontally arranged disk 21 and aplurality of such disks, 22, 23 and 24, are provided in the compartment20. Each of said disks is pro vided with an axially disposed stem 25which extends upwardly to above the casewall 16. .Above the latter, therespective stems are provided with heads 21 22 23 and 24 whereby thevarious movements of the disks may be individually controlled.Longitudinal slots 26 are provided in said casing-wall for the diskstems and are of widths equal to the diameters of the stem, except thatat the forward ends, the slots are desirably enlarged, as at 26 topermit the stems being freely rotated when positioned therein.

Recesses 27 are provided in the peripheries of the disks to accommodatethe ends of sign-plates or number-plates 28 which are each provided witha loop 29, Fig. 6, for making hinged connection with a pin, such as 30,extending across the respective recess. The sign-plates of disk 22 areutilized to designate the calendar months and are accordingly formed attheir free ends in the shapes of figures from 1 to 12, inclusive. Thenext two groups of sign-plates, which are carried by disks 21 and 23,are employed to designate the days of the month,

the sign-plates of disk 21 being accordingly 1 in the form of figures 1to 3, inclusive, and those of theother disk 23, of figures 0, 1, 2,etc., to 9. The sign-plates of the remaining disk 24 are designed todenote the year with in the current century, as 13 1a 15 etc. Indexmarks, such as 31, Fig. 3, are provided on the respective heads 21 22etc., to indicate the circumferential positions of the varioussign-plates of the associated disks. For each head is provided in thecasing-wall 16 a spring-pressed bolt 32 H which is adapted to engage inholes 33 provided in the several heads. There is one of such holes foreach sign-plate and it is located so that when a disk is positioned tohave its stem within the enlarged portion 26 of a slot 26 the holes willbe successively engaged by a bolt when the heads are suitably turned topresent selected ones of the sign-plates in predetermined position.After the sign-plates have been thus revolubly moved through the agencyof the respective heads, the operator, by means of the latter, shoveseach disk forwardly until the free end of the selected sign-plate thereof will drop through apertures 17 and 18 provided in the partitions toextend clownwardly into the camera chamber in front of the film F Bysuch interposition of the sign-plates between the camera lens and thefilm, it is evident that the sign-plates will partially mask or projectshadows upon the iilm when an exposure is made so that an impressionwill be produced upon the latter when the same is developed.

To substitute a sign-plate for one that is pendent from its disk, thehead for that disk is shoved forwardly moving the disk therewith, andwhen the pendent plate encounters the partition upon which the disk islocated, the plate is swung thereby upwardly into the same plane withthe disk, whereupon the disk may be rotated, as before explained, topresent the desired plate in position such that when the disk isreturned to its rearmost position, it will swing downwardly through theaperture 17 or 18 therefor in the respective partitions.

The construction and operation of the invention will, it is thought, beunderstood from the foregoing description.

hat I claim, is-

1. In a camera, a disk, a plurality of numerals hingedly connected tothe periphery of said disk, means for rotating and impartingreciprocatory movements to said disk whereby selected of said numeralsmay be brought into position to screen portions of the sensitive surfacein the camera when said surface is exposed.

2. In a camera, a disk within the camera, a plurality of numeralshingedly connected to the periphery of said disk, means extendingexteriorly of the camera for rotating and imparting reciprocatorymovements to said disk whereby selected of said numerals may be broughtfrom an inoperative position into position to screen portions of thesensitive surface in the camera, whereby such portions are not afiectedwhen the sensitive surface is exposed, and means to prevent thesubstituting of another of said numerals until after the disk isreturned to its original inoperative position.

Signed at Seattle, ask, this 2nd day of March 1914.

CHARLES C. FINN.

WVitnesses E. PETERSON, I-IORAOE BARNES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

